In the 1930 s and 1940 s, prefrontal lobotomy, in which...

In the 1930 s and 1940 s, prefrontal lobotomy, in which neural connections in the frontal lobes of both cerebral hemispheres were severed, was used to treat behavioral conditions such as extreme anxiety and rebelliousness. Although the procedure calmed patients, it had side effects such as apathy and a seriously disrupted personality. In view of the information presented in this chapter, why do you think the operation had these effects?

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Key Concepts

Neural Connectivity

Neural connectivity refers to the complex network of interconnections between different brain regions that allow for coordinated processing and integration of information. Severing these connections can interrupt communication pathways, leading to diminished cognitive functions and altered behavior, as the affected brain regions can no longer properly influence one another.

Prefrontal Cortex

The prefrontal cortex is the region of the brain involved in executive functions, decision-making, personality, and social behavior. Its role in integrating information from various brain regions makes it crucial for regulating emotions and complex behaviors. Disruption in its connectivity can lead to deficits in planning, problem-solving, and overall personality function.

Executive Function

Executive functions are high-level cognitive processes that include planning, impulse control, decision-making, and behavioral regulation. These functions are largely mediated by the prefrontal cortex, and any impairment in this area, such as through the severing of neural circuits, can result in symptoms like apathy, reduced initiative, and impaired personality expression.

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